A child who weighs 40 kg receives a prescription for acetaminophen 15 mg/kg/dose PO every 4 to 6 hours PRN for fever. What is the maximum daily dose the nurse should administer? (Enter the numerical value only.)
The Correct Answer is ["3600"]
Here's how to calculate the maximum daily dose of acetaminophen for the child:
Calculate the maximum dose per administration:
Maximum dose per kg per administration = 15 mg/kg (given)
Child's weight = 40 kg (given)
Since this is a PRN medication (given as needed), we will calculate the maximum dose per administration based on the prescribed dosage.
Maximum dose per administration = 15 mg/kg/dose * 40 kg
Maximum dose per administration = 600 mg (round to nearest whole number)
Calculate the number of administrations in a 24-hour period (maximum):
Frequency: Every 4 to 6 hours PRN (given)
Since this is a PRN medication, we will assume the maximum frequency (every 4 hours) for calculating the maximum daily dose.
Number of administrations (maximum) = 24 hours / Frequency (hours/administration)
Number of administrations (maximum) = 24 hours / 4 hours/administration
Number of administrations (maximum) = 6 administrations
Calculate the maximum daily dose:
Maximum daily dose = Maximum dose per administration x Number of administrations (maximum)
Maximum daily dose = 600 mg/administration * 6 administrations
Maximum daily dose = 3600 mg
Therefore, the maximum daily dose the nurse should administer is 3600 mg.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4.7"]
Explanation
Here's how to calculate the volume (mL) of the reconstituted ampicillin solution the nurse should administer for each dose:
1. We know the following:
Prescribed dose: 140 mg ampicillin (given)
Vial information:
Contains 250 mg ampicillin powder (given)
Reconstituted with 8.3 mL sterile normal saline (given)
Yields a final concentration of 30 mg/mL (given)
2. We need to find the volume (mL) of the reconstituted solution containing the prescribed dose (140 mg) considering the final concentration (30 mg/mL).
Steps:
a. Don't consider the initial volume (8.3 mL) of sterile normal saline. The final concentration (30 mg/mL) refers to the concentration in the diluted solution after adding the saline.
b. Use the following formula:
Volume to administer (mL) = Dose (mg) / Concentration (mg/mL)
c. Plug in the values:
Volume to administer (mL) = 140 mg / 30 mg/mL
Volume to administer (mL) = 4.67 mL (round to nearest tenth)
Therefore, the nurse should administer approximately 4.7 mL of the reconstituted ampicillin solution intravenously every 8 hours for the child.
Correct Answer is ["22.9"]
Explanation
First, let’s convert the client’s weight from pounds to kilograms since the dosage is prescribed in mcg/kg/min. We know that 1 kg is approximately 2.2 lbs. So,
Weightinkg = 140lbs/2.2 ≈ 63.64kg
The prescribed dose is 6 mcg/kg/min. Therefore, the total dose for this client per minute would be:
Doseperminute=6mcg/kg/min×63.64kg = 381.84mcg/min
We need to convert this to mcg/hr since we want the rate in mL/hr and our final concentration is in mcg/mL. There are 60 minutes in an hour, so:
Doseperhour = 381.84mcg/min×60 = 22910.4mcg/hr
The IV bag contains 250 mg of dobutamine in 250 mL of solution. This is equivalent to 250,000 mcg in 250 mL, or 1000 mcg/mL.
Finally, we can find the rate in mL/hr by dividing the dose per hour by the concentration:
RateinmL/hr = 22910.4mcg/hr / 1000mcg/mL = 22.91mL/hr
If rounding is required to the nearest tenth, the nurse should program the infusion pump to deliver 22.9 mL/hr.
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